Wallenberg syndrome (lateral medullary syndrome): 

1) Ipsilateral spinal trigeminal nucleus and tract injury (pain and temperature loss to face).

2) Ipsilateral inferior cerebellar peduncle (ipsilateral dysmetria). 

3) Ipsilateral laryngeal/pharyngeal signs such as dysphagia, hoarseness, loss of gag reflex. 

4) Contra-lateral spinothalamic tract injury (contra-lateral pain and temperature loss to body).